6. The following data security principles shall apply with respect to data retained in accordance with regulation 4(1):
(a)the retained data shall be of the same quality and subject to the same security and protection as those data on the public electronic communications network;
(b)the data shall be subject to appropriate technical and organisational measures to protect the data against accidental or unlawful destruction, accidental loss or alteration, or unauthorised or unlawful storage, processing, access or disclosure;
(c)the data shall be subject to appropriate technical and organisational measures to ensure that they can be accessed by specially authorised personnel only; and
(d)in the case of data retained solely in accordance with regulation 4(1), the data shall be destroyed by the public communications provider at the end of the period of retention.